Abstract.
The paper considers the collective digital signature protocol based on computing a digest of the individual parameters produced by users in dependence on the message and their private keys. The protocol provides simultaneous process of the signature generation and uses the standard public key infrastructure. There are formulated the main requirements to the protocol and considered implementation of the protocol using the Russian standards for digital signatures GOST R 34.10-94 and GOST R 34.10-2001.